Big Data from 274,128 Galaxy Watch Users Challenges '8-Hour Sleep' Rule
Creatrip Team
a month ago
A large wearable-study by Sungshin Women’s University, Samsung Medical Center, Samsung Electronics and Harvard Medical School analyzed sleep data from 274,128 healthy U.S. adults wearing Samsung Galaxy Watches. Average sleep was 7 hours 34 minutes, but individual needs varied widely (10th–90th percentile: 6h30–9h). Researchers conclude there is no single optimal sleep duration for everyone; instead, people should judge sleep by how rested they feel and daytime functioning. Contrary to expectations, middle-aged adults (40–49) slept the least and often tried to make up sleep on weekends, while older adults (60–69) slept the longest. Women slept about 18 minutes more than men on average. The study also highlights that consumer wearables can provide reliable, large-scale data for medical research—the Galaxy Watch sleep measures showed under 10 minutes average error vs. clinical polysomnography. (Sungshin Women’s University: a Korean university; Galaxy Watch: Samsung wearable device)
